Are Pilgrimages to Medjugorje Reeeeeeeally Forbidden?

Yes. Really:

When the second commission was formed, Cardinal Franjo Kuharić and the Bishop of Mostar, in the name of the CBY, declared publicly on 9 January 1987: “For this reason it is forbidden to organise pilgrimages or other manifestations motivated by the supernatural character attributed to the events in Medjugorje“.

Ah! But this only applies to church-sanctioned pilgrimages!

True, but utterly unimportant. The Church doesn’t (and can’t) forbid private pilgrimages for the simple reason that she can’t forbid freedom of movement. You can make a private pilgrimage to the grocery store and say a Rosary before a squash you think resembles the likeness of Jesus if that’s what floats your boat. Doesn’t mean your pilgrimage proves that Jesus is appearing on Aisle 7. People make private pilgrimages to Auschwitz. That doesn’t mean the Blessed Mother is appearing there.

The note from the CDF about Medjugorje is the death knell for this fraud.

Question about Medjugorje
It would appear Rome is Leaning Toward Shutting Down the Medjugorje Traveling Road Show
Medjugorje and the Ents of Rome
Ivan Dragicevic, Medjugorje "visionary", thumbs his nose at the CDF